Literary usage of Mailers

Below you will find example usage of this term as found in modern and/or classical literature:

1.The Statutes at Large from the Magna Charta, to the End of the Eleventh by Great Britain (1765)"... into the bank of Eng' ' land, under the regulations, and in the manner as the
mailers ' are here n, and in the faid recited order required to do; ..."

2.Sunshine and shadow in New York by Matthew Hale Smith (1869)"In searching for other game, they came upon proof that this minister was in the
hands of black-mailers. Letters were found containing information of his ..."

3.A Complete System of Pleading: Comprehending the Most Approved Precedents by John Wentworth, George Townesend, James Cornwall (1798)"mailers, and for want of bail thereto afterwards, ... virtue of the precept for
want of bail thereto, and kept and detained him faid John mailers under the ..."

4.The People's Bible: Discourses Upon Holy Scripture by Joseph Parker (1887)"You cannot satisfy black-mailers ; pay them what you like to-day, they will return
to-morrow. There are'black-mailers in the Church as well as in the world. ..."